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5413422 Print wheels and methods of using same  
In a print wheel encoding scheme, signs such as reflector strips are arranged on an encoder ring along the print wheel petals. One strip is provided at each petal. The strips are grouped into...
4874265 Impact mechanism for impact printer  
An impact mechanism for use in an impact printer, to deliver a printing force to drive a character element against a platen by means of a print tip movable toward and away from the platen. A...
4678355 Print tip contact sensor for quiet impact printer  
An impacting element for an impact printer having a platen, selectable character elements and means for driving the impacting element to impart a printing force to a selected character element, to...
4674898 Printwheel  
A printwheel for an impact printer includes a sheet metal core having a central disk portion and a plurality of radially extending arms. Sintered ceramic or metal character slugs are affixed to...
4653946 Adaptive electronic control system for formed character printer  
A nominal carriage velocity profile is initiated during each carriage positioning interval which enables the carriage to be decelerated and stopped at the proper position for printing. However, the...
4644477 Printing apparatus  
A printing apparatus having a first memory which stores as one unit 8-bit data comprising first data of 6 bits and second data of 2 bits, the first data comprising position data which correspond...
4586836 Characters carrying disc for printing machine  
The disc, made of plastic material, is provided with a circular collar coaxial with its central hole and which is provided, diametrically opposed, with two arms bent at 90°, each arm terminating...
4565128 Rotary wheel printer  
A rotary wheel printer such as a daisy wheel printer includes a rotatable platen for receiving a paper sheet partially therearound, a carriage movable along the platen, and a type wheel mounted on...
4556335 Print wheel mounting means  
A print wheel mounting means. The print wheel has pivot posts formed integrally thereon. The pivot posts are spring-locked into channels in a connector attached to the print wheel drive shaft. The...
4553868 Device for mounting a daisywheel on a typewriter  
The device for mounting a daisy-wheel character carrying disc (70) in a printing machine comprises a frame (22) which is pivoted on a guide (13) of the carriage (12) that is parallel to the platen...
4544289 Print disk positioning system  
A print disk positioning system is disclosed herein which provides rotational and lateral movement of a print disk (20) having raised or depressed characters thereon with the objective of locating...
4493571 Print guide mechanism  
A printing mechanism includes a right-angle drive for imparting rotation to a rotary printing element having printing type thereon, rotation of the print element selecting a specific character to...
4491069 Printing hammer driver mechanism  
A printing hammer drive mechanism for a printing apparatus, comprising a manual control member movably attached to a main frame, an electromagnet mounted on the main frame for movement relative to...
4448555 Impact printing apparatus with interchangeable rotary type wheels  
An impact printing apparatus automatically discriminates the kind of a type element mounted on a reciprocating carriage of the printer and interchangeable with another type element. A print control...
4442769 Staging apparatus used in a sheet feeding environment  
A sheet feeding apparatus having a track for guiding a sheet therein, with the track having an upstream end and a downstream end, and with a staging area located therebetween. Transport rollers are...
4440512 Daisy wheel printer having low mass carriage  
A daisy wheel printer with a low mass carriage is driven by a pair of bidirectional stepping motors mounted on the printer frame. The carriage and print wheel are each driven by their respective...
4416557 Serial printer  
A serial printer for use in portable electronic calculators and the like. The printer includes a single printing head having a plurality of characters divided into two groups circumferentially...
4392756 Serial printing apparatus  
A printing apparatus comprising a printwheel with a hub and spokes extending therefrom, each of the spokes having at least two different types of character slugs thereon; a rotatable printwheel; a...
4391538 Serial printer  
A serial printer having a carriage, a disc-shaped type wheel rotatably carried by said carriage and adapted to be moved transversely of a paper, dome-shaped resilient supporting members covering a...
4390293 Electronic typewriter  
The electronic typewriter comprises a character-carrier disc with flexible blades, which is mounted on a carriage which is movable transversely with respect to the typing roller by means of a...
4335970 Type wheel for serial printing apparatus  
Each of resilient tongues of a type wheel for use in a serial printing apparatus carries one or more type members. Each of the type members is provided with a curved or concave type face whose...
4334790 Type disc typewriter with electronic positioning control  
Keyboard generated signals are digitally encoded and converted to varying voltages for application to a coil for generating magnetic forces. The magnetic forces act on a spring mass system...
4324499 Control unit for a serial printer  
In a serial printer of the type having a carriage continuously moved along a printing line and supporting a type-member intermittently rotated for selecting the next character being printed, a...
4310256 Printers  
In an extra-small sized printer of the so called serial type, which prints one character every time a type wheel is shifted by a distance corresponding to one character in the direction of the line...
4297040 Method and apparatus for positioning a type disc in a balanced force system  
A method and apparatus for positioning a type disc in a balanced force system wherein applied selective forces to effect angular positioning movement from an old to a new position are brought into...
4264220 Printwheel homing apparatus  
In a printwheel type of printer using a selection stepper motor for driving the printwheel, means are provided for performing printwheel homing operation upon occurrence of predetermined events....
4258622 Method of positioning a moving part and a printer operating in accordance with said method  
The invention comes within the field of equipment control. A method of shifting a moving unit from a first position to a second position by means of a stepping motor driven by a finite sequence of...
4251318 Method of making fully etched type-carrier elements  
Etched one-piece type-carrier elements.
4214837 Disc printers  
The type carrying disc has the type characters spaced irregularly along the disc periphery in dependence on their width, but the order in which these characters appear on the disc is independent of...
4212549 Disc printer  
This disc printer uses a relatively massive, rigid print disc having a flat face on which two sets of raised character fonts are arranged in separate spirals. Advantageously, the inner font set...
4209262 Print wheel loading apparatus  
For use in an impact printer having a movable carriage, a motor supported by the carriage and including a rotatable shaft, and a drive coupling member affixed to an end of the shaft, apparatus is...
4178108 Apparatus for space synchronizing carrier and rotatable print disk positions in on-the-fly printing  
A rotatable print disk is mounted on a carrier which traverses along the print line. The disk is moved from each character position to the next by the shortest distance at a constant velocity;...
4165189 Characters carrying disc for a printing machine  
A character-bearing disc operable with a printing machine having a central hub with radially extending flexible arm members, each arm member having a character disposed on an outer portion thereof....
4156105 Circuit arrangement for synchronizing a type carrier in a printer  
A circuit arrangement is disclosed which compares a preferred position of a type carrier driven by a stepping motor with binary values of signals actuating the stepping motor. If a signal assigned...
4122770 Series printer  
A series printer for printing selected indicia or type on a strip of paper wherein the indicia are carried by a rotating drum which rotates in synchronism with a pulse generator identifying...
4103617 Hammer energy impact control using read only memory  
In impact printing mechanism for encoding magnetic or optical characters on documents, a hammer energy control is utilized for maintaining constant impact pressure for the various surface areas of...
4071131 Electronic control system  
An electronic control system for a marking machine having a moving marking member carrying a plurality of marking symbols in which the marking member is stopped and displaced to mark a workpiece...
4058056 Microprocessor controlled card reader/printer  
In this full duplex card reader/printer, a transport mechanism carries a card first past a read head at a constant rate and then incrementally past a printer. Under microprocessor control a message...
4035781 Signal priority logic for serial printer  
In a serial printer comprising a carriage movable along a predetermined path, a print member rotatably mounted to the carriage and including a plurality of character elements, first drive means...
4019615 Low inertia impact printing means  
In a print head, a print wheel comprising the combination of a disk, a plurality of permanently magnetized printing members bearing characters thereon, and electromagnet imparting translation to...
4005264 Arrangement for scanning a disc-shaped type carrier  
An arrangement for scanning a disc-shaped type carrier in a code controlled printing device has a stepping motor which is controllable in the forward and backward directions for setting the type...
3998312 Printing or stamping device  
A printing or stamping device for marking checks and similar documents comprises a rotatable type ring having a plurality of types around its periphery and a keyboard having a plurality of manual...
3991873 Attaching print disc to drive in impact printers  
A print disc and guide are configured so that the print disc can be mounted on a driving shaft transversely to the shaft axis. Removal and replacement of the print disc are thereby facilitated.
3987884 Printing apparatus with paper positioning tractor means and escapement means  
The invention is directed to a highspeed digital print-out apparatus. The apparatus involved is provided with tractors which move the paper in a first direction past a stationary print-out wheel...
3973486 Printer  
A printer comprising a supporting structure and a print disc having a curved peripheral surface with characters formed thereon. The print disc is mounted on the supporting structure for rotation...
3954163 High speed printer with intermittent print wheel and carriage movement  
A high-speed printer with a printing wheel with the individual type elements supported by radially extending spokes. Separate servo systems provide intermittent movement for the printing wheel and...
3924725 Dual array disc printer  
The gap usually required in the arrangement of type characters around the periphery of the print disc in a rotating disc printer to provide time for hammer settle-out is obviated by having two...
3915279 Printer type element deflection limiter  
A relatively high-speed rotary serial printer includes a continuously rotating circular disk with a plurality of resilient type carrying finger members flexible in both axial and lateral...
3915086 Printing apparatus  
Apparatus for printing characters from a multi-position printing head provide pulsed motive power subject to terminal fluctuation. This motive power is yieldably coupled to the printing head to...
3907091 Type disc-interposer assembly for a printer  
A rotating, circular type carrier for a serial printer is equipped with axially movable type elements arranged on its periphery and having type members on one face, and a metal interposer disc with...
Matches 1 - 50 out of 90 1 2 >